A Manchester man has been arrested over an arson attack in Wales which killed a grandmother, mum, and baby girl.

Kim Buckley, 46, her daughter Kayleigh, 17, and six-month old daughter Kimberley died after the blaze tore through their home in Cwmbran, South Wales, yesterday morning.

A 27-year-old man from the Manchester area has been arrested on suspicion of murder and is in custody.

It is understood Kimberley was a twin – whose sibling had recently died in hospital prior – and had only been brought home from hospital on Monday.

Firefighters called to the two-storey property in Tillsland, Coed Eva, at 3.30am found it was ‘well alight’ on arrival.

Gwent Police said forensic tests had been taking place and officers are conducting house to house enquiries in the area.

Chief Inspector Steve Corcoran, investigating, said: “This is a tragic incident that involved three generations of the same family and our condolences are with the family of the victims. We would ask, on their behalf, for them to be left alone to grieve at this time.

“Our family liaison officers are supporting them at this dreadful time.

This has affected the wider community, they were well known within the community and their loss will be keenly felt and they will be missed. We are grateful for the co-operation of the community at this awful time. We are working with partners to ensure that all those affected will be given support.”

Neighbour Sandra Gough, 64, said: “I heard banging and screaming at about 3am. It could well have been somebody trying to force their way in or out of the burning house.“I would have tried to help if I’d gone out there, but I didn’t know.”